| bronchus intermedius | The portion of the right main bronchus between the upper lobe bronchus and the origin of the middle and inferior lobe bronchi. Synonym: bronchus intermedius. (05 Mar 2000) |
|---|---|
| bronchus principalis dexter | It arises at the bifurcation of the trachea and enters the hilum of the right lung, giving off the superior lobe bronchus and continuing downward to give off the middle and inferior lobe bronchi. It is shorter, of greater caliber, and more nearly-vertical than the left main bronchus, thus, aspirated objects more frequently lodge on the right side. Synonym: bronchus principalis dexter. (05 Mar 2000) |
| bronchus principalis sinister | It arises at the bifurcation of the trachea, passes in front of the oesophagus and enters the hilum of the left lung where it divides into a superior lobe bronchus and an inferior lobe bronchus. It is longer, of narrower caliber, and more nearly-horizontal than the right main bronchus, hence, aspirated objects enter it less frequently. Synonym: bronchus principalis sinister. (05 Mar 2000) |
| bronchus segmentalis | One of the divisions of the lobar bronchus that supplies a bronchopulmonary segment. In the right lung there are commonly ten: in the superior lobe, the apical (B1) segmental bronchus, bronchus segmentalis apicalis; posterior (B2) segmental bronchus, bronchus segmentalis (BII) posterior; and anterior (B3) segmental bronchus, bronchus segmentalis (BIII) anterior; in the middle lobe, lateral (B4) segmental bronchus, bronchus segmentalis (BIV) lateralis; and medial (B5) segmental bronchus, bronchus segmentalis medialis (BV); in the inferior lobe, superior (B6) segmental bronchus, bronchus segmentalis superior (BVI), medial basal (B7) segmental bronchus, bronchus segmentalis basalis medialis (BVII); anterior basal (B8) segmental bronchus, bronchus segmentalis basalis anterior (BVIII); lateral basal (B9) segmental bronchus, bronchus segmentalis basalis lateralis (BIX); and posterior basal (B10) segmental bronchus, bronchus segmentalis basalis posterior (BX). In the left lung there are commonly nine: in the superior lobe, the apicoposterior (B1+2) segmental bronchus, bronchus segmentalis apicoposterior (BI+I); anterior (B3) segmental bronchus, bronchus segmentalis anterior (BIII); superior lingular (B4) segmental bronchus, bronchus lingularis superior (BIV); and inferior lingular (B5) segmental bronchus, bronchus lingularis inferior (BV); in the inferior lobe, superior (B6) segmental bronchus, bronchus segmentalis superior (BVI); medial basal (B7) segmental bronchus, bronchus segmentalis basalis medialis (cardiacus) (BVII), anterior basal (B8) segmental bronchus, bronchus segmentalis basalis anterior (BVIII); lateral basal (B9) segmental bronchus, bronchus segmentalis basalis lateralis (BIX); and posterior basal (B10) segmental bronchus, bronchus segmentalis basalis posterior (BX). Synonym: bronchus segmentalis. (05 Mar 2000) |
| Bronsted acid | An acid that is a proton donor. (05 Mar 2000) |
| Bronsted base | Any molecule or ion that combines with a proton; e.g., OH-, CN-, NH3; this definition replaces the older and more limited concepts of base. (05 Mar 2000) |
| Bronsted theory | That an acid is a substance, charged or uncharged, liberating hydrogen ions in solution, and that a base is a substance that removes them from solution (e.g., NH4+, CH3COOH, and HSO4- are acids; NH3, CH3COO-, and SO4- are bases); useful in the concept of weak electrolytes and buffers. Compare: Bronsted acid, Bronsted base. (05 Mar 2000) |
| Bronsted, Johannes | <person> Danish physical chemist, 1879-1947. See: Bronsted acid, Bronsted base, Bronsted theory. (05 Mar 2000) |
| brontology | <study> A treatise upon thunder. Origin: Gr. Thunder. Source: Websters Dictionary (01 Mar 1998) |
| brontophobia | <psychology> A morbid fear of thunder. Origin: Gr. Phobos = fear (16 Mar 1998) |
| brontosaurus | <paleontology> A genus of American jurassic dinosaurs. A length of sixty feet is believed to have been attained by these reptiles. Origin: NL, fr. Gr. Thunder + lizard. Source: Websters Dictionary (01 Mar 1998) |
| brontotherium | <paleontology> A genus of large extinct mammals from the miocene strata of western North America. They were allied to the rhinoceros, but the skull bears a pair of powerful horn cores in front of the orbits, and the fore feet were four-toed. Origin: NL, fr. Gr. Thunder + beast. Source: Websters Dictionary (01 Mar 1998) |
| brontozoum | <paleontology> An extinct animal of large size, known from its three-toed footprints in Mesozoic sandstone. The tracks made by these reptiles are found eighteen inches in length, and were formerly referred to gigantic birds; but the discovery of large bipedal three-toed dinosaurs has suggested that they were made by those reptiles. Origin: NL, fr. Gr. Thunder + animal. Source: Websters Dictionary (01 Mar 1998) |
| bronze | 1. To give an appearance of bronze to, by a coating of bronze powder, or by other means; to make of the colour of bronze; as, to bronze plaster casts; to bronze coins or medals. "The tall bronzed black-eyed stranger." (W. Black) 2. To make hard or unfeeling; to brazen. "The lawer who bronzes his bosom instead of his forehead." (Sir W. Scott) Bronzed skin disease. See Addison's disease. Origin: Cf. F. Bronzer. See Bronze. Source: Websters Dictionary (01 Mar 1998) |
| bronze diabetes | A genetic disease in which the body takes in too much iron from food, this causes excess iron to be deposited in the liver and heart and other organs, eventually leading to organ failure and death. This illness is called bronze diabetes because the kidneys often fail, leading to symptoms similar to those found with diabetes mellitus, and because the deposition of iron into the skin makes the person look like he or she has an all-over tan. It used to be believed that this disease was rare and mainly affected people of Caucasian descent, butin recent years scientists have realised it is more common and affects a wide range of ethnic groups. Some believe that this genetic defect actually helps people (especially women) survive in areas where malnutrition is widespread and iron is scarce in food. Regular venesection may help people suffering from this disease. (09 Oct 1997) |
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| bronchodilator |
Medication which opens up the main air passages to the lungs.
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| bronchoscopy |
The internal inspection of the trachea and bronchi using a bronchoscope.
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| bronchospasm |
A condition in which the muscles surrounding the air passages to the lungs contract, narrowing the passages.
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| bronchi- |
The plural of bronchus, the large air passages of the lungs.
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| bronchoscope |
A tool designed to facilitate inspection of the trachea and bronchi; used in both diagnostic and therapeutic procedures.
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| BRO | of or relating to an instrument for examining the interior of the bronchi |
|---|---|
| BRO | any of several cytologic smears obtained from different parts of the lower respiratory tract |
| BRO | a spasm of the bronchi that makes exhalation difficult and noisy |
| BRO | either of the two main branches of the trachea |
| BRO | an unbroken or imperfectly broken mustang |
| BRO | a cowboy who breaks broncos to the saddle |
| BRO | breaking a bronco to saddle |
| BRO | a person who breaks horses |
| BRO | British anthropologist (born in Poland) who introduced the technique of the participant observer (1884-1942) |
| BRO | British anthropologist (born in Poland) who introduced the technique of the participant observer (1884-1942) |
| BRO | English novelist |
| BRO | English novelist |
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